Germany – Construction work for tunnels – Kiesbergtunnel - Ausführung betriebstechnische Ausstattung

The planned construction measure involves a comprehensive reconstruction project for the Kiesbergtunnel on the state road L 70. The road tunnel, which was commissioned in 1970, is characterized by its two-storey design, in which the two two-lane directional carriageways are largely routed one above the other. Due to outdated operating technology and age-related concrete damage, there is a considerable need for renovation. The structural peculiarities of the engineering structure result in increased demands on the planning and implementation of the measure. The project also includes a reconstruction for the dilapidated bridge structure of the L 70 over the Viehhofstraße. A detailed description of the project and its scope can be found in Annex 8 Project Information (Part of the Tender Documents). Due to the high project-specific requirements and the particular complexity, the "Integrated Project Implementation" (IPA) is chosen as the project implementation model. The aim is to ensure a partnership-oriented and goal-oriented implementation of the project through suitable framework conditions. The central element is a joint alliance contract (multi-party contract) between the contracting authority and the key partners responsible for planning and construction. Details on the IPA and the essential contractual provisions of the future alliance contract are summarized in a key points paper, which is attached as Annex 9 (Part of the Tender Documents).